Install Macbuntu to make Ubuntu 11.04 Unity look like Mac OS X

Macbuntu is an open-source program, designed to make Ubuntu’s appearance look like Mac OS X. I have written about Macbuntu for previous Ubuntu edition, but Macbuntu package for Ubuntu 11.04 Unity has not come out yet. So here’s how to install Macbuntu package for Ubuntu 10.10 on Ubuntu 11.04 Natty to make Unity look like Mac OS X.